Investigation of time variations of radon ﬂow density from the ground surface

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Investigation of time variations of radon ﬂow density from the ground surface

A.V.Vukolov¹, A.S.Zelinskij¹, P.P.Firstov², V.S.Yakovleva¹, O.P.Malysheva²

Tomsk polytechnic university
Kamchatkan branch of the geophysical service of the Russian Academy of Sciences

In the report the results of measurements of time series of radon ﬂow density from the ground surface on
Petropavlovsk-Kamchatskiy (Paratunka) geodynamic test site are presented. The measurements were carried
out from August, 2000 to June, 2010. Radon ﬂow density was measured by a storage camera installed on the
ground and a measuring device. The stored activity of soil radon was measured by the means of end-window
counters of beta radiation. Three algorithms of processing of measurement results of impulse score rate from
beta radiation are presented. The results of data processing by diﬀerent algorithms choosing the most suitable
one for these purposes are discussed. Correlation analysis of variations of radon ﬂow density with meteorological
parameters and seismic activity in the region was carried out. In the report we present the results of the analysis
and their further discussion.